An external CSU/DSU isn't configured within the router. It's usually configured either through the front panel display or via DIP switches. You'll want to verify at least three things on your CSU: line speed (number of channels), framing (ESF/D4), and line coding (B8ZS/AMI). You may also need to configure clocking, bit robbing, etc. It will help you immensely to have a manual for your CSU available. You may want to check the manufacturer's website, if they have one.
Good luck!
- Don
-----Original Message-----
From: Minh Vu [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 23, 2000 10:12 PM
To: '[EMAIL PROTECTED]'
Subject: How to Config DSU/CSU....
Hi,
How do I config EXTERNAL DSU/CSU on 1005 and 2501, I tried to simulate 56k
link across those two, but I couldn't find the command or how to config
this, before I was used cross-over between those two.
The cross-over between two DSU/CSU was working (its display linked @56k)
Here is my layout:
1005<--->DSU/CSU<xxxxx>DSU/CSU<---->2501
DSU/CSU :Motorola 3512
IOS: 11.3.11aT1
here is "int s0" of 2501 config:
interface Serial1
ip address 50.0.0.1 255.0.0.0
no keepalive
! note I using HDLC encap.
!note with this 2501 config, I got
Serial1 is up, line protocol is up
here is 1005 config
interface Serial0
ip address 50.0.0.2 255.0.0.0
no ip mroute-cache
bandwidth 56000
fair-queue 64 256 0
! also using HDLC encap.
!note with this 1005 config, I got
Serial0 is up, line protocol is down
Anyone have sample config on EXTERNAL DSU/CSU. I looked thru cisco site,
they just have sample for INTERNAL only, which I don't have those command
(ie: service-module , and T1-controller).
Thanks
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